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47280326 UD |
1 | ;! HP-PA __mpn_add_n -- Add two limb vectors of the same length > 0 and store |
2 | ;! sum in a third limb vector. | |
7def3d92 | 3 | |
688903eb | 4 | ;! Copyright (C) 1992-2018 Free Software Foundation, Inc. |
7def3d92 | 5 | |
47280326 | 6 | ;! This file is part of the GNU MP Library. |
7def3d92 | 7 | |
47280326 | 8 | ;! The GNU MP Library is free software; you can redistribute it and/or modify |
f01ec467 AJ |
9 | ;! it under the terms of the GNU Lesser General Public License as published by |
10 | ;! the Free Software Foundation; either version 2.1 of the License, or (at your | |
47280326 | 11 | ;! option) any later version. |
7def3d92 | 12 | |
47280326 UD |
13 | ;! The GNU MP Library is distributed in the hope that it will be useful, but |
14 | ;! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
f01ec467 | 15 | ;! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
47280326 | 16 | ;! License for more details. |
7def3d92 | 17 | |
f01ec467 | 18 | ;! You should have received a copy of the GNU Lesser General Public License |
ab84e3ff PE |
19 | ;! along with the GNU MP Library. If not, see |
20 | ;! <http://www.gnu.org/licenses/>. | |
7def3d92 RM |
21 | |
22 | ||
47280326 UD |
23 | ;! INPUT PARAMETERS |
24 | ;! res_ptr gr26 | |
25 | ;! s1_ptr gr25 | |
26 | ;! s2_ptr gr24 | |
27 | ;! size gr23 | |
7def3d92 | 28 | |
47280326 UD |
29 | ;! One might want to unroll this as for other processors, but it turns |
30 | ;! out that the data cache contention after a store makes such | |
31 | ;! unrolling useless. We can't come under 5 cycles/limb anyway. | |
7def3d92 | 32 | |
47280326 | 33 | .text |
7def3d92 | 34 | .export __mpn_add_n |
47280326 | 35 | __mpn_add_n: |
7def3d92 RM |
36 | .proc |
37 | .callinfo frame=0,no_calls | |
38 | .entry | |
39 | ||
e4782a56 RM |
40 | ldws,ma 4(%r25),%r21 |
41 | ldws,ma 4(%r24),%r20 | |
7def3d92 | 42 | |
47280326 UD |
43 | addib,= -1,%r23,L$end ;! check for (SIZE == 1) |
44 | add %r21,%r20,%r28 ;! add first limbs ignoring cy | |
7def3d92 | 45 | |
e4782a56 RM |
46 | L$loop: ldws,ma 4(%r25),%r21 |
47 | ldws,ma 4(%r24),%r20 | |
48 | stws,ma %r28,4(%r26) | |
7def3d92 | 49 | addib,<> -1,%r23,L$loop |
47280326 | 50 | addc %r21,%r20,%r28 |
7def3d92 | 51 | |
e4782a56 | 52 | L$end: stws %r28,0(%r26) |
7def3d92 RM |
53 | bv 0(%r2) |
54 | addc %r0,%r0,%r28 | |
55 | ||
56 | .exit | |
57 | .procend |